This paper introduces the properties of cement additive, hollow float beads, and its application in oilwell cementing.
本文介绍了水泥外加剂——空心漂珠的特性及其在油田固井中的应用。
The experimental results were indicated that salt-tolerance and thermal stability were improved, therefore, it can be used as a water loss control additive in oilwell cement.
实验证明：磺甲基化聚丙烯酰胺的抗盐性和水溶性均得到改善，可用作油井水泥降失水剂。
The experimental results were indicated that salt-tolerance and thermal stability were improved, therefore, it can be used as a water loss control additive in oilwell cement.
实验证明：磺甲基化聚丙烯酰胺的抗盐性和水溶性均得到改善，可用作油井水泥降失水剂。
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